/* eslint-disable no-unreachable */
/* eslint-disable no-unreachable */
<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avater_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 头像区域结束 -->
            <!-- 登录表单区域 -->
            <el-form :model="loginForm" :rules="loginFormRules" ref="loginFormRef" class="login_form" label-width="0px">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
            <!-- 登录表单区域结束 -->
        </div>
    </div>
</template>

<script>
export default {
    data () {
        return {
            // 登录表单数据绑定对象
            loginForm: {
                username: 'admin',
                password: '123456'
            },
            // 验证规则
            loginFormRules: {
                // 用户名验证
                username: [
                    { required: true, message: '请输入登录名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                // 密码验证
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods: {
        /**
         * 点击按钮重置表单
         */
        resetLoginForm () {
            // console.log(this)
            this.$refs.loginFormRef.resetFields()
        },
        login () {
            // 登录之前预验证
            this.$refs.loginFormRef.validate(async valida => {
                // console.log(valida)
                if (!valida) return
                const { data: res } = await this.$http.post('login', this.loginForm)
                if (res.meta.status !== 200) return this.$msg.error('登录失败')
                this.$msg.success('登录成功')
                // 保存token到sessionStorage中
                window.sessionStorage.setItem('token', res.data.token)
                // 通过编程时导航跳转到后台主页，/home
                this.$router.push('/home')
            })
        }
    }
}
</script>

<style lang="less" scoped>
    .login_container {
        position: relative;
        background-color: #2b4b6b;
        height: 100%;
    }

    .login_box {
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        .avater_box {
            position: absolute;
            left: 50%;
            padding: 10px;
            width: 130px;
            height: 130px;
            border: 1px solid #EEE;
            border-radius: 50%;
            box-shadow: 0 0 10px #eee;
            transform: translate(-50%, -50%);
            background-color: #fff;
            img {
                width: 100%;
                height: 100%;
                border-radius: 50%;
                background-color: #eee;
            }
        }
    }

    .login_form {
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }

    .btns {
        display: flex;
        justify-content: flex-end;
    }
</style>
